Ordered spin-ice state in the geometrically frustrated metallic-ferromagnet Sm2Mo2O7

Abstract

The recent discovery of Spin-ice is a spectacular example of non-coplanar spin arrangements that can arise in the pyrochlore A2B2O7 structure. We present magnetic and thermodynamic studies on the metallic-ferromagnet pyrochlore Sm2Mo2O7. Our studies, carried out on oriented crystals, suggest that the Sm spins have an ordered spin-ice ground state below about T* = 15 K. The temperature- and field-evolution of the ordered spin-ice state are governed by an antiferromagnetic coupling between the Sm and Mo spins. We propose that as a consequence of a robust feature of this coupling, the tetrahedra aligned with the external field adopt a "1-in, 3-out" spin structure as opposed to "3-in, 1-out" in dipolar spin ices, as the field exceeds a critical value.

References in corpus (13)

• Spin Ice State in Frustrated Magnetic Pyrochlore Materials
• Low Temperature Spin Freezing in Dy2Ti2O7 Spin Ice
• Magnetic anisotropy of the spin ice compound Dy2Ti2O7
• Magnetic order and spin fluctuations in the spin liquid Tb$\_2$Sn$\_2$O$\_7$
• Neutron scattering studies of the spin ices Ho2Ti2O7 and Dy2Ti2O7 in applied magnetic field
• Spin Chirality Fluctuation and Anomalous Hall Effect in Itinerant Ferromagnets
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• Anisotropic Release of the Residual Zero-point Entropy in the Spin Ice Compound Dy2Ti2O7: Kagome-ice Behavior
• Magnetic Ordering in the Spin-Ice Candidate Ho${}_2$Ru${}_2$O${}_7$
• Comment on "Short-range magnetic interactions in the spin-ice compound Ho2Ti2O7"
• Studies of the Anomalous Hall Effect and Magnetic Structure of Nd2Mo2O7 -Test of the Chirality Mechanism-
• Neutron Scattering Studies of Pyrochlore Compound Nd2Mo2O7 in Magnetic Field
• Specific heat study of spin-structural change in pyrochlore Nd${}_2$Mo${}_2$O${}_7$

Cited by in corpus (8)

• Magnetic order and ice rules in the multiferroic spinel FeV2O4
• Manifestation of geometric frustration on magnetic and thermodynamic properties of pyrochlores $S{m}_2{X}_2{O}_7$ (X=Ti, Zr)
• Temperature dependent Raman and x-ray studies of spin-ice pyrochlore $D{y}_{2}T{i}_2{O}_7$ and non-magnetic pyrochlore $L{u}_{2}T{i}_2{O}_7$
• Tunable spin reorientation transition and magnetocaloric effect in Sm0.7-xLaxSr0.3MnO3 series
• Amorphous ferromagnetism and re-entrant magnetic glassiness in Sm${}_2$Mo${}_2$O${}_7$: new insights into the electronic phase diagram of pyrochlore molybdates
• Revisiting spin ice physics in the ferromagnetic Ising pyrochlore Pr${}_2$Sn${}_2$O${}_7$
• Single-crystal growth and magnetic properties of the metallic molybdate pyrochlore Sm2Mo2O7
• Local site behavior of the 5d and 4f ions in the frustrated pyrochlore Ho2Os2O7